A surgeon performing a cardiac catheterization. The catheter,about the same thickness as a fine fishing line,is passed into a vein in the patient's arm. The catheter is then fed through the blood vessels to the heart. The surgeon keeps track of the catheter's position using an x-ray video camera. A tiny pressure measuring device,micromenometer,is at the end of the catheter,and is used to take blood pressure readings at both sides of a heart valve. This microsensor device was made using the same technology as is used in the manufacture of silicon 'chips',allowing minute sensors to be built for such invasive diagnostic techniques | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Martin, Doug |
Taille de l’image : | 4162 px × 2768 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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